LineNumberReader 

Introduction

The Java.io.LineNumberReader class is a buffered character-input stream that keeps track of line numbers.A line is considered to be terminated by any one of a line feed (‘\n’), a carriage return (‘\r’), or a carriage return followed immediately by a linefeed.

Class declaration

Following is the declaration for Java.io.LineNumberReader class −

public class LineNumberReader
   extends BufferedReader

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Field

Following are the fields for Java.io.LineNumberReader class −

• protected Object lock − This is the object used to synchronize operations on this stream.

Class constructors

Sr.No.	Constructor & Description
1	LineNumberReader(Reader in)This creates a new line-numbering reader, using the default input-buffer size.
2	LineNumberReader(Reader in, int sz)This creates a new line-numbering reader, reading characters into a buffer of the given size.

Class methods

Sr.No.	Method & Description
1	int getLineNumber()This method gets the current line number.
2	void mark(int readAheadLimit)This method mark the present position in the stream.
3	int read()This method read a single character.
4	int read(char[] cbuf, int off, int len)This method read characters into a portion of an array.
5	String readLine()This method read a line of text.
6	void reset()This method reset the stream to the most recent mark.
7	void setLineNumber(int lineNumber)This method set the current line number.
8	long skip(long n)This method skip characters.

Methods inherited

This class inherits methods from the following classes −

• Java.io.BufferedReader
• Java.io.Reader
• Java.io.Object